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    <title>Document</title>
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<body>
    <img src="./images/1.webp" alt="">
    <script>
        // 获取这个元素的DOM对象
        const img = document.querySelector('img')
        // 修改对象的属性值     对象名.属性名 = 新值
        img.src = './images/2.webp'
        img.alt = '华仔嘎嘎的'
    </script>
</body>

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